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English definition of “open sth up”

open sth up

(SHOW) phrasal verb with open     /ˈəʊ.pən/ US  /ˈoʊ-/ verb
to show something that was hidden or not previously known: The debate could open up sharp differences between the countries.Revealing secrets and becoming known
(Definition of open sth up (SHOW) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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